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SCORE
Eleuthero (Eleutherococcus senticosus)
Adaptogen · Endurance · Stress
Tier 3 — Trending
What it is
Formerly called Siberian ginseng (no longer permitted by regulation as it is not a true ginseng). Used extensively by Soviet athletes during the Cold War for endurance and stress resilience. A few small trials show modest improvements in fatigue and endurance. Different active compounds from Panax ginseng. Generally well tolerated. Evidence base is weaker than Rhodiola or Ashwagandha for similar claims.
Efficacy
2/5
Safety
4/5
Research
2/5
Onset
2/5
Cost
3/5
Drug-int.
4/5
Dose
300–400 mg/day standardised extract (0.8% eleutherosides); weaker evidence than Rhodiola
Time of day & tips
Take in the morning to avoid sleep disruption. Take with or without food. Best used in cycles (6–8 weeks on, 2 weeks off).
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